| Kassel to Karlovo | 934.75 mi (1,504.33 km) |
| Kassel to Karnobat | 1,015.28 mi (1,633.94 km) |
| Kassel to Kavarna | 1,031.49 mi (1,660.02 km) |
| Kassel to Kazanlak | 957.46 mi (1,540.89 km) |
| Kassel to Knezha | 867.25 mi (1,395.71 km) |
| Kassel to Kostinbrod | 870.18 mi (1,400.42 km) |
| Kassel to Kozloduy | 841.09 mi (1,353.60 km) |
| Kassel to Kyustendil | 879.74 mi (1,415.81 km) |
| Kassel to Levski | 912.05 mi (1,467.81 km) |
| Kassel to Lom | 821.15 mi (1,321.52 km) |
| Kassel to Lovech | 907.73 mi (1,460.85 km) |
| Kassel to Lukovit | 884.67 mi (1,423.74 km) |
| Kassel to Lyaskovets | 946.16 mi (1,522.69 km) |
| Kassel to Mezdra | 870.44 mi (1,400.84 km) |
| Kassel to Momchilgrad | 1,011.77 mi (1,628.29 km) |
